Manufacture of artificial para rubber.



To.- all whom it may com-em:

- Be it known that I, J OHN BLUM, a subject of the King'of Great Britain, residing at 7 Rue St; Boniface, Brussels, in the Kingdom of Belgium, have invented certain new and useful Improvements in and Relating to the Manufacture of Artificial Para Rubber, of which the followin is a specification.

,This invention re ates to-the manufacture of artificial. or synthetic Para-rubber, that is to say a material having physical and properties similar to those of Paravegetable matter is freed as far aspossible' from earthy substance with which it may be contaminated, and is then dried. Hot water at about 80 centigraderis then added to it and a small quantity of a ferment producing substance. The fermentation process is 30. continued at .a "constant temperature of about 60 C. for some considerable time (say about three weeks); carbonic acid is liberated and after a-few days mucilaginous filaments are roduced, their quantity grad; ually increasing until, after complete fermentation, they amount to about of the quantity of peat used. These mucilaginous filaments consist of hydrocarbons, particularly turpenes or analogous substances such as lsoprene, and they are extracted with carbon disulfid or some other suitable solvent and subsequently separated therefrom in any appropriate manner.

-.The' material so obtained is then treated with the nitrogenous derivative of irone (which may be produced in the manner.

hereinafter described) and with the mineral salts and is'thereby converted into a substance having' properties similar to those of Para rubber.

In order to obtain the nitrogenous irone derivative above referred to, the root-stock of plantsof the I rz's family is suitably treat- I ed, as by disintegration and repeated lixiviation with hot water, for the purpose of dis- Specificati on of Letters Patent. Application filed October 6, 1908. Serial No. 458,826.

- UNITED STATES PATENT OFFICE.

BLUM', OF BONIFACE, BRUSSELS, BELGIUM, ASSIGNOR OF ONE-HALF TO ALFRED WlL- LIAM CARPENTER, OF LONDON, ENGLAND.

mama-Acumen or aivrmrcrar. PARA nnmann.

t Patented Nov. 17, 1908.

solving the irone (.C H O) which it contains. Chlorin in an appropriate form, for exam le in the form of gas, is then intro-' duce into the irone so1ution,thereby forming irone hydro-chlorid. A suitable nitrogen compound, preferably an 'amin is then added, and the liquid is cooled to alow temperature. Qrystals are formed, the chemical constitution of which may he re resented approximately by the form a,

O13H18N0 erably made in the form of a mixture of carbonates in the proportion offour molecules of sodium bicarbonate to. one molecule of calcium carbonate, about 2% of the massbeing used.

The percentage of'the nitrogenous irone derivatives in the final to about 1.8%.'

The substance obtained in accordance with this process presents a strong resemblame to natural Para rubber both in its chemical behavior and hysical properties. What I claim and desire to secure by Letters Patent of the United States is: V 1. A process of manufacturing synthetic Para rubber, which consists in subjecting vegetable matter, such as peat, to fermentation until a mucilaginous mass containing a large percentage of isoprene is formed, sepa-' rat mainmg liquid, and treating it with a nitrogeno'us derivative of irone and suitable mineral salts.

preparation amounts Par'a-rubber, which consists in vegetable matter, such as peat, wlth water, subjec'ting it to fermentation, until a'mucilagii inous mass from the remaining liquid, and

treating it with a nitrogenous derivativeof irone represented approximately by the formula and also with a small quantity of mineral salts.

the mucilaginous mass from the re- 2. A process for manufacturing synthetic:

' 3. A recess for manufacturing-synthetic with a nitro en compound, cooling the reject-ing it to fermentation, until a mucilagithe crystals from the remaining liquid; a"

I isoprene is formed, ssolvmg ,the mucilag- ."mass with the said nitrogenous irone deriva- 2 0 the said mass from the solvent; dissolving irone into irone hydrochlorid, treating it 5 FRANK L. BALLp Para-ru her, which consists in mixing" vegesultant liqui suflicient to crystallize out the table matter, such as peat, with water, subnitrogenous irone derivative, and separatlng nous mass containinge large percentage of finally treating the said isoprene-containing inous isoprene-containing mass in a solvent tive, and with mineralsalts. v such as carbon disulfid, separating the said In testimon whereof I aflix mi signature isoprene-containing mass and solvent from in presence 0 two witnesses.

the remaining then out and separati the irone contained in Witnesses: I, the root-stock of m's plants, converting the HARO D W. LAKE, 

